diff --git a/src/core/common/timer.cpp b/src/core/common/timer.cpp
index 59a0ebfca..d560f6de0 100644
--- a/src/core/common/timer.cpp
+++ b/src/core/common/timer.cpp
@@ -107,6 +107,11 @@ void TimerMilli::Stop(void)
     Get<Scheduler>().Remove(*this);
 }
 
+void TimerMilli::RemoveAll(Instance &aInstance)
+{
+    aInstance.Get<Scheduler>().RemoveAll();
+}
+
 void Timer::Scheduler::Add(Timer &aTimer, const AlarmApi &aAlarmApi)
 {
     Timer *prev = nullptr;
@@ -193,6 +198,18 @@ exit:
     return;
 }
 
+void Timer::Scheduler::RemoveAll(const AlarmApi &aAlarmApi)
+{
+    Timer *timer;
+
+    while ((timer = mTimerList.Pop()) != nullptr)
+    {
+        timer->SetNext(timer);
+    }
+
+    SetAlarm(aAlarmApi);
+}
+
 extern "C" void otPlatAlarmMilliFired(otInstance *aInstance)
 {
     Instance *instance = static_cast<Instance *>(aInstance);
@@ -233,6 +250,11 @@ void TimerMicro::Stop(void)
     Get<Scheduler>().Remove(*this);
 }
 
+void TimerMicro::RemoveAll(Instance &aInstance)
+{
+    aInstance.Get<Scheduler>().RemoveAll();
+}
+
 extern "C" void otPlatAlarmMicroFired(otInstance *aInstance)
 {
     Instance *instance = static_cast<Instance *>(aInstance);
diff --git a/src/core/common/timer.hpp b/src/core/common/timer.hpp
index b109a9721..6489961be 100644
--- a/src/core/common/timer.hpp
+++ b/src/core/common/timer.hpp
@@ -136,6 +136,7 @@ protected:
 
         void Add(Timer &aTimer, const AlarmApi &aAlarmApi);
         void Remove(Timer &aTimer, const AlarmApi &aAlarmApi);
+        void RemoveAll(const AlarmApi &aAlarmApi);
         void ProcessTimers(const AlarmApi &aAlarmApi);
         void SetAlarm(const AlarmApi &aAlarmApi);
 
@@ -183,6 +184,7 @@ public:
     private:
         void Add(TimerMilli &aTimer) { Timer::Scheduler::Add(aTimer, sAlarmMilliApi); }
         void Remove(TimerMilli &aTimer) { Timer::Scheduler::Remove(aTimer, sAlarmMilliApi); }
+        void RemoveAll(void) { Timer::Scheduler::RemoveAll(sAlarmMilliApi); }
         void ProcessTimers(void) { Timer::Scheduler::ProcessTimers(sAlarmMilliApi); }
 
         static const AlarmApi sAlarmMilliApi;
@@ -247,6 +249,9 @@ public:
      *
      */
     static TimeMilli GetNow(void) { return TimeMilli(otPlatAlarmMilliGetNow()); }
+
+protected:
+    static void RemoveAll(Instance &aInstance);
 };
 
 /**
@@ -322,6 +327,7 @@ public:
     private:
         void Add(TimerMicro &aTimer) { Timer::Scheduler::Add(aTimer, sAlarmMicroApi); }
         void Remove(TimerMicro &aTimer) { Timer::Scheduler::Remove(aTimer, sAlarmMicroApi); }
+        void RemoveAll(void) { Timer::Scheduler::RemoveAll(sAlarmMicroApi); }
         void ProcessTimers(void) { Timer::Scheduler::ProcessTimers(sAlarmMicroApi); }
 
         static const AlarmApi sAlarmMicroApi;
@@ -377,6 +383,9 @@ public:
      *
      */
     static TimeMicro GetNow(void) { return Time(otPlatAlarmMicroGetNow()); }
+
+protected:
+    static void RemoveAll(Instance &aInstance);
 };
 #endif // OPENTHREAD_CONFIG_PLATFORM_USEC_TIMER_ENABLE
 
diff --git a/tests/unit/test_timer.cpp b/tests/unit/test_timer.cpp
index 427b5a15c..1e469298f 100644
--- a/tests/unit/test_timer.cpp
+++ b/tests/unit/test_timer.cpp
@@ -104,6 +104,8 @@ public:
 
     void ResetFiredCounter(void) { mFiredCounter = 0; }
 
+    static void RemoveAll(ot::Instance &aInstance) { TimerType::RemoveAll(aInstance); }
+
 private:
     uint32_t mFiredCounter; //< Number of times timer has been fired so far
 };
@@ -134,6 +136,7 @@ template <typename TimerType> int TestOneTimer(void)
 
     // Test one Timer basic operation.
 
+    TestTimer<TimerType>::RemoveAll(*instance);
     InitTestTimer();
     InitCounters();
 
@@ -259,6 +262,7 @@ template <typename TimerType> int TestTwoTimers(void)
     TestTimer<TimerType> timer1(*instance);
     TestTimer<TimerType> timer2(*instance);
 
+    TestTimer<TimerType>::RemoveAll(*instance);
     InitTestTimer();
     printf("TestTwoTimers() ");
 
@@ -491,6 +495,7 @@ template <typename TimerType> static void TenTimers(uint32_t aTimeShift)
 
     // Start the Ten timers.
 
+    TestTimer<TimerType>::RemoveAll(*instance);
     InitTestTimer();
     InitCounters();